The Prophet ﷺ said: If two Muslims meet, shake hands, praise Allah, and ask Him for forgiveness, they will be forgiven.  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا الْتَقَى الْمُسْلِمَانِ فَتَصَافَحَا وَحَمِدَا اللَّهَ ﷻ وَاسْتَغْفَرَاهُ غُفِرَ لَهُمَا  

The Prophet ﷺ said: Two Muslims will not meet and shake hands having their sins forgiven them before they separate.  

قَالَ رَسُولُ اللَّهِ ﷺ مَا مِنْ مُسْلِمَيْنِ يَلْتَقِيَانِ فَيَتَصَافَحَانِ إِلاَّ غُفِرَ لَهُمَا قَبْلَ أَنْ يَفْتَرِقَا  

When the people of the Yemen came, the Messenger of Allah ﷺ said: The people of the Yemen have come to you and they are first to shake hands.  

قَالَ رَسُولُ اللَّهِ ﷺ قَدْ جَاءَكُمْ أَهْلُ الْيَمَنِ وَهُمْ أَوَّلُ مَنْ جَاءَ بِالْمُصَافَحَةِ